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GooCanvas Reference Manual | ![]() |
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GooCanvasEllipse; GooCanvasItem* goo_canvas_ellipse_new (GooCanvasItem *parent, gdouble center_x, gdouble center_y, gdouble radius_x, gdouble radius_y, ...);
"center-x" gdouble : Read / Write "center-y" gdouble : Read / Write "height" gdouble : Read / Write "radius-x" gdouble : Read / Write "radius-y" gdouble : Read / Write "width" gdouble : Read / Write "x" gdouble : Read / Write "y" gdouble : Read / Write
GooCanvasEllipse represents an ellipse item.
It is a subclass of GooCanvasItemSimple and so inherits all of the style properties such as "stroke-color", "fill-color" and "line-width".
It also implements the GooCanvasItem interface, so you can use the
GooCanvasItem functions such as goo_canvas_item_raise()
and
goo_canvas_item_rotate()
.
To create a GooCanvasEllipse use goo_canvas_ellipse_new()
.
To get or set the properties of an existing GooCanvasEllipse, use
g_object_get()
and g_object_set()
.
The ellipse can be specified either with the "center-x", "center-y", "radius-x" and "radius-y" properties, or with the "x", "y", "width" and "height" properties.
typedef struct _GooCanvasEllipse GooCanvasEllipse;
The GooCanvasEllipse struct contains private data only.
GooCanvasItem* goo_canvas_ellipse_new (GooCanvasItem *parent, gdouble center_x, gdouble center_y, gdouble radius_x, gdouble radius_y, ...);
Creates a new ellipse item.
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the parent item, or NULL . If a parent is specified, it will assume
ownership of the item, and the item will automatically be freed when it is
removed from the parent. Otherwise call g_object_unref() to free it.
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the x coordinate of the center of the ellipse. |
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the y coordinate of the center of the ellipse. |
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the horizontal radius of the ellipse. |
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the vertical radius of the ellipse. |
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optional pairs of property names and values, and a terminating NULL .
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Returns : |
a new ellipse item. |
Here's an example showing how to create an ellipse centered at (100.0, 100.0), with a horizontal radius of 50.0 and a vertical radius of 30.0. It is drawn with a red outline with a width of 5.0 and filled with blue:
GooCanvasItem *ellipse = goo_canvas_ellipse_new (mygroup, 100.0, 100.0, 50.0, 30.0, "stroke-color", "red", "line-width", 5.0, "fill-color", "blue", NULL);
"center-x"
property"center-x" gdouble : Read / Write
The x coordinate of the center of the ellipse.
Default value: 0
"center-y"
property"center-y" gdouble : Read / Write
The y coordinate of the center of the ellipse.
Default value: 0
"height"
property"height" gdouble : Read / Write
The height of the ellipse.
Allowed values: >= 0
Default value: 0
"radius-x"
property"radius-x" gdouble : Read / Write
The horizontal radius of the ellipse.
Allowed values: >= 0
Default value: 0
"radius-y"
property"radius-y" gdouble : Read / Write
The vertical radius of the ellipse.
Allowed values: >= 0
Default value: 0
"width"
property"width" gdouble : Read / Write
The width of the ellipse.
Allowed values: >= 0
Default value: 0
"x"
property"x" gdouble : Read / Write
The x coordinate of the left side of the ellipse.
Default value: 0
"y"
property"y" gdouble : Read / Write
The y coordinate of the top of the ellipse.
Default value: 0